Antiskidding-device coupling.



" M Mil/L PQ C. TRAVER. ANTISKIDDING DEVICE y(}0U}1`.|I1\ G. APPLIGATIQN FILED SEPT. 11, 190e.

Patented Sept.6,1910.

UNITED sauras Arana? onirica,

PHILIP c. rnavnn,

OF FAR ROCIKASWAY,4 NEW YORK, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO PEARSALL-TRAVER MANUFACTURING COMPANY, A COR- 4 POBATION QF NEW YORK.

Y AN'rrsKIDnIue-nnvrcn ooUrLrNG.

Specification of Letters Patent.

Application filed September l11, 1909. Serial No. 517,301.

.on .the wheels of automobiles; and the in! vention consists in the construction'and arrangement of parts hereinafter described and claimed specifically whereby the circumfei ntial anchor chains are each provided with a-'Aform of coupling by which they 'maynot only be quickly .and conveniently secured in position on opposite sides of a tire, but couplings which also constitute resilient means for holding said anchor chains, and hence the whole anti-skidding device, taut upon the tire land also whereby the traction or gripping plates are rendered simple, cheap and effective in structure for the purpose designed.

In the accompanying drawings, the figure Y 1, is a side elevation of a portion 'of a pneumatic, tire to which an anti-skidding device provided with my couplings is applied.

Thecircumferential anchor chains A, are

formed of a series of articulated links a,

of any suitable form and length, the'ends of each anchor chain being united by the resilient'coupling C.' This coupling C, con- -sists of a\coiled retractile spring e, 'of piano or other suitable wire, ofapproprlate length and resilience, attached at one'extremityto one end of the chain A, and having attached toits other extremity a return lever bolt b, of peculiariconstruction, the' other end of which is adapted to engage with an eye a, on the end/of the cham A, to which the spring s, 'is attached. The lever bolt b, is formed withfa loop b', which engages with the loop or'eye snof the spring s. From the loop o', the lever is bentA to form the return member 52, formed at or near' its ex tremity'-with the shoulder for engage I ment with the eye ring a', before referred to. `Between the return lmember b2, and the loop b', the lever bolt b, is formed with a bearing b, preferably out of alinement with the longitudinal axis of the spring' s. This bearing b, is for engagement with the link,

loop or eye ring a2, on the other end of the Patented sept. 6, 1910.

anchor chain A, and its situation between I the loop b', and return member 6 2, causes the tension of the spring a, in lise, to tend togthrust the shoulderedl end of the lever outward so as to insure and reserve the .en-

c. Hence the greater the strain on t e spring and the r,greater the resilient force exerted thereby; the more securely the parts will be locked together. The retractile tendency of the spring is thus `utilized in rendering the coupling positive whenever the length of the chain A,u is such, as related to the circumference of the tire, that the elasticity of the spring is brought into play in driving the chain taut upon the tire.

The thread plates T, are attached to the.

circumferential anchor. chains 1A, by ligatures t, t, preferablyconssting of articulated chain links, substantially as shown,

with links c engaging in flanges -t of the' tread plates, although other flexible ligaturcs may be substituted if preferred.

The said couplings are not only simple and effective in use, butthey-provide meansby which the anti-skidding device as. a whole may be quickly and conveniently applied to or removed from a tire. ,A

That l claim as my invention and desire to secure by Letters Patent is,

'gagement of the shoulder 3', with thee e The combination of a chain and coupling, Y said coupling interposed between the two ends of saidchain, said coupling comprising a coiled springA having one end attachable tol one end of said chain, an outstanding connecting eye secured to said end of the chain, an eye on the opposite end of the spring,'an Aeye on the opposite end of the chain, and a return lever bolt having one end pivotally connected'with said eye of the.

spring and having a\bight loosely engaged in the eye at the adjacent end of the'ehain,

the free end of said return lever bolt azif longitudinal anemenr, with the 15W@ @ms tendin parallel wh the spring and beof the chain.

yond t 1e opposite end thereof W'zh its freeg end engageable in the connecting eye @n I he endo' the chain to which sind spring is attached, the said spring and the night C. TRAE/ER Witnesses n D. W'. GAHQNE D i Us. the return levex bolt being subsantay in 

